Patent US1115531A successfully refreshed from Google Patents.
US1115531A
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US
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Apparatus for grinding ores and other materials.
Assignee: HARDINGE CONICAL MILL Co
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Filing: 1910-10-19
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Granted: 1914-11-03
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Expires: 1930-10-19
Abstract
No abstract record available.
Inventors
- 👤 Harry W Hardinge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:03
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1917-11-02 | 1918-05-04 | 1918-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-11-02 | 1922-05-04 | 1922-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-11-02 | 1926-05-04 | 1926-11-03 | $7700.00 | Window Closed / Lapsed |